Difference between the multiplicative bias after METACALIBRATION, μ_metacal and detection bias, μ_det, as a function of the input magnitude m_input for the grid-based simulations. The bright (light) colours show the results when we apply a shear of ±0.02 (±0.01) in the metacalibration step. The solid black (open grey) points show the average bias, and the blue (red) points indicate Δμ₁ (Δμ₂). Using a larger shear results in smaller uncertainties and a better agreement between the two shear components.